Tuesday, May 10, 2011

Enabling Windows Server Backup support for the Hyper-VSS Writer

Generically, a VSS write is an interface provided an application to manage data and state information, ensure that pending data is flushed to disk, and ensure that the application is quiescent prior to initializing a volume shadow copy snapshot. This process is necessary to provide a consistent application state prior to performing a backup. In fact, Hyper-V provides a VSS writer that supports the backup of Hyper-V server configuration information and virtual machines.

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In Hyper-V, the VSS writer is implemented in the Hyper-V Virtual Machine Management Service (VMMS) and offers the following functionality:

1) Backup and recovery of Hyper-V server and all configuration settings